802.589.0911 Live Chat With Us

Shop Buick Intake Manifolds

Choose Vehicle Year

Finish Selecting Your Vehicle to Shop For Your Intake Manifold

Choose a Year for your Buick 's Intake Manifold

  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2009
  • 2008
  • 2007
  • 2006
  • 2005
  • 2004
  • 2003
  • 2002
  • 2001
  • 2000
  • 1999
  • 1998
  • 1997
  • 1996
  • 1995
  • 1994
  • 1993
  • 1992
  • 1991
  • 1987
  • 1986
  • 1985
  • 1984
  • 1983
  • 1982
  • 1981
  • 1980
  • 1979
  • 1978
  • 1977
  • 1976
  • 1975
  • 1972
  • 1963
  • 1962
  • 1961
Show More Years

Shop By Brand

The Following brands are available based on your search.

  • ATP
    ATP
  • Dorman
    Dorman
  • Edelbrock
    Edelbrock
  • URO Parts
    URO Parts
  • Weiand
    Weiand

Best Selling Genuine Buick Intake Manifolds

  • We Stock the following top leading brands, including Dorman, ATP, URO Parts, Edelbrock
  • Constantly Updated Inventory of Buick Replacement Intake Manifold Parts

We stock Intake Manifold parts for most Buick models, including Allure, Century, Commercial Chassis, Electra, Encore, Estate Wagon, GS, LaCrosse, LeSabre, Lucerne, Park Avenue, Rainier, Regal, Rendezvous, Riviera, Roadmaster, Skylark, Special.

Dorman
1993 Buick Regal Engine Intake Manifold - Upper 6 Cyl 3.8L Dorman

P311-1D5A2B0    615-179  New

87-1602 , FH10112 , CV892C , 17113044 , 25043843 , 17113046

Qty:
$140.11
Dorman Engine Intake Manifold Upper
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 5 In.
    • Package Contents: Intake Manifold, Valve, Fitting, Plastic Plug, Includes All Gaskets
    • Port Outlet Dimensions: 180x222 Mm
Brand: Dorman
Position: Upper
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1993 - Buick Regal Upper V 6 Cyl 3.8L 231 3800
Dorman
1999 Buick Regal Engine Intake Manifold - Lower 6 Cyl 3.8L Dorman

P311-4B15175    615-281  New

24505729

Qty:
$195.48
Dorman Engine Intake Manifold Lower
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 3 In.
    • Package Contents: Manifold
    • Port Outlet Dimensions: 2x1.5
    • Port Quantity: 6
Brand: Dorman
Position: Lower
Additional Fitment Information:
Vehicle Aspiration Engine VIN Position Block Engine CID CC
1999 - Buick Regal Supercharged 1 Lower V 6 Cyl 3.8L 231 3800
Dorman
1997 Buick Skylark Engine Intake Manifold - Upper 6 Cyl 3.1L Dorman

P311-4B317C6    615-297  New

24505664

Qty:
$188.75
Dorman Engine Intake Manifold Upper
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 5 In.
    • Package Contents: Intake Manifold
    • Port Quantity: 6
Brand: Dorman
Position: Upper
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1997 - Buick Skylark Upper V 6 Cyl 3.1L 189 -
Dorman
2007 Buick Rainier Engine Intake Manifold - Upper 6 Cyl 4.2L Dorman

P311-3125DAF    615-567  New

8890178000 , 89017551

Qty:
$244.59
Dorman Engine Intake Manifold Upper
  • ; 1 Piece
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 8 In.
    • Package Contents: Intake Manifold And Gaskets
    • Port Quantity: 6
Brand: Dorman
Position: Upper
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2007 - Buick Rainier Upper L 6 Cyl 4.2L 256 -
Dorman
2001 Buick Park Avenue Engine Intake Manifold - Upper 6 Cyl 3.8L Dorman

P311-3AB0D94    615-180  New

XT-A016 , FH10095 , 87-1601 , 106001 , 89017272 , 89017274 , 24506013 , SK615180 , 217-454 , 12537425

Qty:
$89.33
Dorman Engine Intake Manifold Upper
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 6.5 In.
    • Package Contents: Intake Manifold, Gaskets, Pcv Items
    • Port Outlet Dimensions: 36 X 45 Mm
    • Port Quantity: 6
Brand: Dorman
Position: Upper
Additional Fitment Information:
Vehicle Aspiration Engine VIN Position Block Engine CID CC
2001 - Buick Park Avenue Naturally Aspirated K Upper V 6 Cyl 3.8L 231 3800
Dorman
2003 Buick Rendezvous Engine Intake Manifold - Upper 6 Cyl 3.4L Dorman

P311-399041B    615-197  New

24507499 , 24507501

Qty:
$220.95
Dorman Engine Intake Manifold Upper
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 4 In.
    • Package Contents: Intake Manifold
    • Port Outlet Dimensions: 25 X 81 Mm
    • Port Quantity: 6
Brand: Dorman
Position: Upper
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2003 - Buick Rendezvous Upper V 6 Cyl 3.4L 207 -
Dorman
2006 Buick Lucerne Engine Intake Manifold - Lower 6 Cyl 3.8L Dorman

P311-0DABA26    615-280  New

24508923

Qty:
$399.42
Dorman Engine Intake Manifold Lower
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 5 In.
    • Package Contents: Intake Manifold
    • Port Quantity: 6
Brand: Dorman
Position: Lower
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2006 - Buick Lucerne Lower V 6 Cyl 3.8L 231 3800
Dorman
1994 Buick Skylark Engine Intake Manifold - Upper 6 Cyl 3.1L Dorman

P311-4AF8798    615-299  New

10137068

Qty:
$194.31
Dorman Engine Intake Manifold Upper
  • Product Attributes:
    • Grade Type: Regular
    • Manifold Height (in): 5 In.
    • Package Contents: Intake Manifold And Gaskets
    • Port Quantity: 6
Brand: Dorman
Position: Upper
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1994 - Buick Skylark Upper V 6 Cyl 3.1L 189 -
Dorman
2016 Buick Encore Engine Intake Manifold 4 Cyl 1.4L Dorman

P311-288A2AD    615-380  New

55577314 , 55581014 , 25299449 , 25200449

Qty:
$156.29
Dorman Engine Intake Manifold
  • ; For Use with Single MAP Sensor Port
  • Product Attributes:
    • Center Maximum Height: 9
    • Front Maximum Height: 2.25
    • Grade Type: Regular
    • Manifold Height (in): 8 In.
    • Mounting Hole Diameter: 10.6
    • Mounting Hole Quantity: 6
    • Package Contents: 1 Manifold, 4 Port Gaskets, 1 Throttle Body Gasket, 4 Fuel Injector O-rings, 1 Map Sensor O-ring, 3 Self Tapping Screws
    • Port Outlet Dimensions: 37 Mm X 19.5 Mm
    • Port Quantity: 4
    • Rear Maximum Height: 4
    • Width: 9
Brand: Dorman
Additional Fitment Information:
Vehicle Engine Designation Block Engine CID CC
2016 - Buick Encore LUV L 4 Cyl 1.4L 83 1364
ATP
2005 Buick Park Avenue Engine Intake Manifold 6 Cyl 3.8L ATP

P311-07CA57B    106001  New

615180 , 89017272 , 6001186 , 106001 , 17113136

Qty:
$91.06
ATP Engine Intake Manifold
  • ATP Engine Intake Manifold
  • Product Attributes:
    • LineCode: Atp2
  • ATP Intake Manifolds are exact fit, no compromise replacement parts
Brand: ATP
Additional Fitment Information:
Vehicle Aspiration Block Engine CID CC
2005 - Buick Park Avenue Naturally Aspirated V 6 Cyl 3.8L 231 3800
URO Parts
1998 Buick LeSabre Engine Intake Manifold - Upper 6 Cyl 3.8L URO Parts

P311-3550D2F    CE1413044  New

615-180 , 16001 , 89017274 , 89017272 , 24506013 , CE1413044 , 12537425 , URO-013044

Qty:
$77.73
  • Intake Manifold
  • Product Attributes:
    • California Proposition 65: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
Brand: URO Parts
Position: Upper
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1998 - Buick LeSabre Upper V 6 Cyl 3.8L 231 3800
Edelbrock
1984 Buick Regal Engine Intake Manifold 8 Cyl 5.0L Edelbrock - RPM Air-Gap Intake Manifold

P311-3AE176F    7501  New

Qty:
$344.85
Edelbrock Engine Intake Manifold
  • S/B CHEVY RPM AIR-GAP INTAKE
  • ; Cast Finish; 4 bbl Carb; 1500-6500rpm; Non-EGR; For Square-Bore Carbs; Street/Hi Perf. Use Only Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps
  • RPM Air-Gap Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Standard
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Utilizing the proven short runner tunnel-ram style, both of these manifolds provide the next step up in performance for LT1 and LT4 owners. These are both direct stock replacements for OEM equipment with all required emissions features.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1984 - Buick Regal Base V 8 Cyl 5.0L 305 -
Edelbrock
1978 Buick Skylark Engine Intake Manifold 8 Cyl 5.7L Edelbrock - RPM Air-Gap Intake Manifold

P311-387D993    75013  New

Qty:
$469.22
Edelbrock Engine Intake Manifold
  • INTAKE MANIFOLD PERF RPM AIR GAP SB CHEV. W/BLK POWDER COAT FINISH
  • ; Black; 4 bbl Carb; 1500-6500rpm; Non-EGR; For Square-Bore Carbs; Street/Hi Perf. Use Only Recommend Edelbrock Gasket PN[7201] for Manifold Gasket~ Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps~ For Pre-Pollution Controlled Or Race Use Or Engine Swaps
  • RPM Air-Gap Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Standard
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Utilizing the proven short runner tunnel-ram style, both of these manifolds provide the next step up in performance for LT1 and LT4 owners. These are both direct stock replacements for OEM equipment with all required emissions features.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1978 - Buick Skylark Custom V 8 Cyl 5.7L 350 -
Edelbrock
1977 Buick Century Engine Intake Manifold 8 Cyl 5.0L Edelbrock - RPM Air-Gap Intake Manifold

P311-3902D32    75014  New

Qty:
$501.79
Edelbrock Engine Intake Manifold
  • E-SHINE 7501 SBC RPM AIR-GAP INTAKE
  • ; Endurashine(TM); 4 bbl Carb; 1500-6500rpm; Non-EGR; For Square-Bore Carbs; Street/Hi Perf. Use Only Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps
  • RPM Air-Gap Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Standard
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Utilizing the proven short runner tunnel-ram style, both of these manifolds provide the next step up in performance for LT1 and LT4 owners. These are both direct stock replacements for OEM equipment with all required emissions features.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1977 - Buick Century Custom V 8 Cyl 5.0L 305 -
Edelbrock
1980 Buick Century Engine Intake Manifold 8 Cyl 5.0L Edelbrock - RPM Air-Gap Intake Manifold

P311-3902D32    75014  New

Qty:
$501.79
Edelbrock Engine Intake Manifold
  • E-SHINE 7501 SBC RPM AIR-GAP INTAKE
  • ; Endurashine(TM); 4 bbl Carb; 1500-6500rpm; Non-EGR; For Square-Bore Carbs; Street/Hi Perf. Use Only Recommend Edelbrock Gasket PN[7201] for Manifold Gasket~ Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps~ For Pre-Pollution Controlled Or Race Use Or Engine Swaps
  • RPM Air-Gap Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Standard
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Utilizing the proven short runner tunnel-ram style, both of these manifolds provide the next step up in performance for LT1 and LT4 owners. These are both direct stock replacements for OEM equipment with all required emissions features.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1980 - Buick Century Base V 8 Cyl 5.0L 305 -
Edelbrock
1975 Buick LeSabre Engine Intake Manifold 8 Cyl 6.6L Edelbrock - Performer RPM Pontiac Intake Manifold

P311-4A95E01    7156  New

Qty:
$383.49
Edelbrock Engine Intake Manifold
  • PERFORMER RPM PONTIAC INTAKE MANIFOLD
  • ; Cast Finish; Non-EGR; 1500-6500 rpm; 4 bbl; Recommended For High-Performance Street/Strip/Marine Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps
  • Performer RPM Pontiac Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Standard
    • Emission: Without Egr
    • Engine Make/Size: Pontiac 326-455
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Designed for 1965-79 street 326-455 c.i.d. Pontiac V8's (except Ram Air V and 265/301 V8's). Recommended for high-performance street, strip and marine. Provides maximum high-rpm power while maintaining good throttle response for street. Has clearance for HEI distributor. Will not fit under Transmission Am Shaker hood without modifications. Also available as a complete manifold and carb kit. ** Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 650-800 cfm. Installation Notes: Recommended intake gasket: Edelbrock #7280. No provisions for OEM choke. OEM carb requires conversion to electric/manual choke. For 1968-71 use #8015 throttle bracket. Manifold height: 1-1/4" taller than stock, A-6.88", B-8.00" measured to engine block; Carb pad height: 7.45", (see pages 81-82). Port exit dimensions: 1.10" x 2.06". A-6.88", B-8.00" measured to engine block; Carb pad height: 7.45", (see pages 81-82). Port exit dimensions: 1.10" x 2.06".
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1975 - Buick LeSabre Custom V 8 Cyl 6.6L 400 -
Edelbrock
1978 Buick Regal Engine Intake Manifold 8 Cyl 5.0L Edelbrock - RPM Air-Gap Intake Manifold

P311-3AE176F    7501  New

Qty:
$344.85
Edelbrock Engine Intake Manifold
  • S/B CHEVY RPM AIR-GAP INTAKE
  • ; Cast Finish; 4 bbl Carb; 1500-6500rpm; Non-EGR; For Square-Bore Carbs; Street/Hi Perf. Use Only Recommend Edelbrock Gasket PN[7201] for Manifold Gasket~ Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps~ For Pre-Pollution Controlled Or Race Use Or Engine Swaps
  • RPM Air-Gap Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Standard
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Utilizing the proven short runner tunnel-ram style, both of these manifolds provide the next step up in performance for LT1 and LT4 owners. These are both direct stock replacements for OEM equipment with all required emissions features.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1978 - Buick Regal Limited V 8 Cyl 5.0L 305 -
Edelbrock
1978 Buick Skylark Engine Intake Manifold 8 Cyl 5.0L Edelbrock - Performer RPM Intake Manifold

P311-3247F26    7101  New

Qty:
$268.25
Edelbrock Engine Intake Manifold
  • PERFORMER RPM MANIFOLD
  • ; Cast Finish; 4 bbl Carb; 1500-6500rpm; Non-EGR Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps
  • Performer RPM Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Chevy Small Block
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Designed for 1955-86 262-400 c.i.d. Chevy V8s for maximum power and a broad torque curve for high-performance street/marine. Provides power like a single-plane and throttle response like a dual-plane. Has provisions to add oil fill tube.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1978 - Buick Skylark Base V 8 Cyl 5.0L 305 -
Edelbrock
1980 Buick Century Engine Intake Manifold 8 Cyl 5.0L Edelbrock - Performer RPM Intake Manifold

P311-3247F26    7101  New

Qty:
$268.25
Edelbrock Engine Intake Manifold
  • PERFORMER RPM MANIFOLD
  • ; Cast Finish; 4 bbl Carb; 1500-6500rpm; Non-EGR Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps~ For Pre-Pollution Controlled Or Race Use Or Engine Swaps
  • Performer RPM Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Chevy Small Block
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Designed for 1955-86 262-400 c.i.d. Chevy V8s for maximum power and a broad torque curve for high-performance street/marine. Provides power like a single-plane and throttle response like a dual-plane. Has provisions to add oil fill tube.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1980 - Buick Century Base V 8 Cyl 5.0L 305 -
Edelbrock
1982 Buick Regal Engine Intake Manifold 8 Cyl 4.4L Edelbrock - RPM Air-Gap Intake Manifold

P311-387D993    75013  New

Qty:
$469.22
Edelbrock Engine Intake Manifold
  • INTAKE MANIFOLD PERF RPM AIR GAP SB CHEV. W/BLK POWDER COAT FINISH
  • ; Black; 4 bbl Carb; 1500-6500rpm; Non-EGR; For Square-Bore Carbs; Street/Hi Perf. Use Only Not Legal For Use On Pollution Controlled Vehicles~ For Pre-Pollution Controlled Vehicles Or Engine Swaps
  • RPM Air-Gap Intake Manifold
  • Product Attributes:
    • Cylinder Head Type: Standard
    • Emission: Without Egr
    • Engine Make/Size: Chevy Small Block (262-400)
    • Number of Carbs: One
    • Position: N/a
    • RPM Range: 1500-6500
    • Usage: Street/hi-performance
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Lead; Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov.
  • Utilizing the proven short runner tunnel-ram style, both of these manifolds provide the next step up in performance for LT1 and LT4 owners. These are both direct stock replacements for OEM equipment with all required emissions features.
Brand: Edelbrock
Additional Fitment Information:
Vehicle Submodel Block Engine CID CC
1982 - Buick Regal Base V 8 Cyl 4.4L 267 -

Latest Buick Repair and Intake Manifold Installation Advice

CarJunky AutoAdvice

'98 Buick Regal bad Intake Manifold Gasket

Showing 11 out of 23 Posts | Show 12 Hidden Posts
Question From terryhop on '98 Buick Regal bad Intake Manifold Gasket

I have a 1998 Buick Regal GS, supercharged, with the 3.8L V6 engine and 150k. The intake manifold gasket(s) is/are bad and I'm wondering if a relative novice (myself) can realistically tackle this project with the proper tools. I also have a cracked radiator and would like to do the work myself if possible and save a good bit of money in the process. The car is obviously not of great value at this stage of the game.

Thanks for the advice

Response From PatrickH

Doing this project can be a real pain. Just be ready to buy a few gaskets and if you can, replace anything that may need replacing in the next couple years while you are there and have the good access.
I just attempted this project this week and these is what I decided to do while I had the car apart
Oil change, Fuel filter replaced, New rechargeable air filter, Intake manifold gasket, Rear valve cover gasket, Thermostat, Spark plugs and new wires, Coolant flush, Fuel injector O'rings, Throttle body gasket, Plenum gasket, Super Charger Fluid topped off
Front valve cover gasket was replaced by dealership with a factory recall
Be very carefully with the injectors. As you can see in this picture, the plastic washer tip type things are very hard and crack like a stale cracker.. You can NOT buy new plastic washer, you will have to buy a new injector if you break this. Or there is a injector ring of another style for another car that may be used and it seems to work for me so far. I will get into that later if anyone is interested.

You don't need to disconnect the fuel lines, just un bolt the fuel rails and use a bungee cord to hold it above the motor, then you can carefully pull out the supercharger and manifold out from underneath it, threw the left side. just remember to unplug everything as much as you can so you can raise it up enough. Don't put too much tension on the wires, just enough to raise it up out of the way.

Only disconnect what needs to be disconnected.

Intake Manifold 18ft lbs (dealership told me this)

Also you will need to drain the radiator. before replacing the intake manifold, be sure to use about a quart of oil to wash all the water down back into the oil pan. You will see the coolant and know what I'm talking about at this point.
Be sure to do a oil change before starting your car when finished.

Pictures below



Response From PatrickH

Now I have a question

Attachment below.
The two little gasket strips you see in the picture below, the Orange with the Black tab on the side.
Which way do these go on?
The Black tab on the outside or the inside?
They will go on both ways, but only one way is correct.

Response From Hammer Time

Those are not factory gaskets. They should have come with instructions. The factory gaskets don't have that difference.

Response From PatrickH


Those are not factory gaskets. They should have come with instructions. The factory gaskets don't have that difference.

Felpro / Intake Manifold Gasket
Part Number:
MS95977-1

Only instructions was to put the little dabs of silicone in the corners..

Response From Hammer Time

Wow, I've never seen those colors on a Fel Pro gasket. From the picture it looks like the side rail might be longer on one side than the other. I suspect it will only fit good one way.

Response From PatrickH

Well when I was putting it on the car, the gaskets fit both ways.. That's the problem.
The way I installed seemed to me the best fit and made more sense then the other way.
So I torqued it to 18ft lb (by hand just a good tight snug) inner to outer and checked them all 3 times.
after getting my car back together I did a coolant flush, after running in my driveway for a couple hours off and on, there was no leaks. I took it for a test drive on the freeway and can smell coolant.. I pulled over and look and it was leaking and steaming from the left side.. Right side looked a little wet, but you can see coolant on the left side pretty well.. When I looked at a picture online, I seen that the black tab was on the outside, but I don't have any details on that image, so it could have still been the wrong way..

Also, since I only drove about 5 miles on these new gaskets I replaced, you think it's safe to reuse them when I tear it down again to fix this issue?

Here below is the image I found online, this is the way I installed them on my car.

Response From Hammer Time

Those are end gaskets anyway. they don't seal coolant. they seal oil from the vally and i'm sure if they didn't specify, it's probably not important. It's the side gaskets that you messed up.

Response From PatrickH

I just went out and started my car again to see if I can see anything this time before pulling it back into my garage.
I found the leak.. It's the hard plastic water pump elbow thing that connects into the intake manifold, that's where it's leaking from
Hopefully I can just remove the pump easier then taking off the whole top of the motor apart again.
Not sure why it wasn't leaking while idle in my driveway last night, probably the coolant wasn't fully cycled threw the engine yet and it wasn't at a high enough level to pour out that spot?
leaked with 30 seconds this time..
I don't think I remember seeing much of a O'ring at that spot and thought that was kinda strange, but for future reference to anyone who does this job, watch for this before installing the intake back on..

Pictured below

Response From Hammer Time

You don't pull the manifold for that but you will have to remove the belt tensioner. Be sure to check for pieces still in the hole. those thing break off clean right at the O-ring and leave the piece inside.

Response From PatrickH

ok, thank you.

Response From Hammer Time

There are a couple O-rings on the tensioner that you should change at the same time. Be carefull not to break it getting the metal part out of the block. It's an expensive tensioner.

Response From PatrickH

I removed the alternator, the pulley wheel and 2 15mm bolt and was able to pry it back just enough to pop out the elbow bypass deal. Might have to do a little more to get it back on since the new part will have a added inch.
The only O'rings I see are on each end of the elbow piece. And they where stuck inside along with 1/4" of plastic on each end..
I wish I noticed this before putting the manifold back on, but I guess I just wasn't expecting to find a issue like this and wasn't paying close enough attention. Lesson learned

Here's a image of what I pulled out.. Took about 10 mins
The other small broken piece is still stuck inside, just haven't took it out yet for the picture

Response From Hammer Time

Yes, the is one broken piece missing from that picture.

Once you remove the bolts that hold the tensioner on, there is one metal part of it at the bottom that slides into a hole in the block with an O-ring. That's the part I'm referring to.

Response From PatrickH

Do you know the size of the O'ring that will need to be replaced or a Part Number by chance?
I'm sure the dealership may be able to figure it out for me, but just encase they can't

Part number for the coolant bypass tube for local auto stores is Part Number# 47065 (or) GM part Number# 24503423

Since I found the numbers, I see now that it's a stocked part at the part stores.
When I called my local parts stores, no one could figure out what the part was I was talking about..
Doing a category search I could not find these parts either.

Response From Hammer Time

Can't help you on the O-ring. You either going to have to match it up from a set or get it from the dealer.

Response From PatrickH

Got back from the dealership
There is two O'rings I was sold.
One of them is larger then the other, so the one that cost more I'm assuming is the bigger one.

O'ring part numbers
Part# 25537068 = $1.50
Part# 24502846 = $3.00

Response From Loren Champlain Sr

terryhop; The Mitchell guide calls for 3.5hrs labor, so it shouldn't be too tough. I'd recommend flushing the cooling system very thoroughly before you get started if you can do so without letting it overheat. When you are done, use normal, green, ethlyn glycol anti-freeze rather than the Dex-Cool that more than likely caused this problem.

Response From Hammer Time

the Dex-Cool that more than likely caused this problem.

Don't be spreading untrue rumors now................

Response From Loren Champlain Sr

LOL...I KNEW that I'd hear from someone on that. Can you spell class action suit? I wouldn't put that stuff in my lawnmower. Oh, boy....Now I've done it!

Response From Hammer Time

Even the so called suit has nothing to do with gaskets. The gaskets are just plain bad and will fail with any coolant.

Response From re-tired Top Rated Answer

The one variable we don't know is your mechanical abilities and how bad you REALLY want to do this . For a qualifiied tech this is a straight forward job. For a novice with the proper tools and a good manual and the ability to understand the terms and procdures it is a doable project. IMO

Response From way2old

I agree with re-tired. Set aside a weekend and a 12 pack(minimum) and have a good manual to assist you with the technical aspects. Go for it. Number and mark where the pushrods come from. Place them back in the same hole.